linux-kernel - Re: Input: add Atmel Atmegaxx captouch driver

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Message-ID: <CANEJEGu=QkYwrDeS08JdNaUis1aVpOs_xnZCdFmC4FHF8uSRHA@mail.gmail.com>
Date:	Mon, 9 May 2016 09:44:57 -0700
From:	Grant Grundler <grundler@...omium.org>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	Daniel Hung-yu Wu <hywu@...gle.com>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Grant Grundler <grundler@...omium.org>,
	Rob Herring <robh@...nel.org>,
	linux-input <linux-input@...r.kernel.org>,
	Grant Likely <grant.likely@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux DeviceTree <devicetree@...r.kernel.org>
Subject: Re: Input: add Atmel Atmegaxx captouch driver

On Mon, May 9, 2016 at 9:29 AM, Dmitry Torokhov
<dmitry.torokhov@...il.com> wrote:
> On Fri, May 06, 2016 at 11:14:12PM +0800, Daniel Hung-yu Wu wrote:
>> The register set is different, and this chip does not support calibration.
>> The I2C protocol is not the same as well; there is an additional byte
>> indicating data length.
>>
>> Atmega88PA is a general-purpose MCU. In the future, we will add more
>> functionalities, such as firmware upgrade through I2C.
>
> Is it Google who will be maintaining and extending the protocol or
> Atmel? If it is Google then maybe we should switch compat string to
> "google,captouch" or similar.

My understanding was Atmel would extend the protocol to support FW update.
No other extensions are planned.

cheers,
grant